King Safety Products 62225 Waterproof Wire Connectors, Aqua/Red, 20-Pack

works well wished they sold this in a smaller size

I bought these when I replaced my landscape lights and used 10G wire, but it turns out that the connectors on the lights fit the wire with no problem, so I only ended up using 4 nuts. I had bought 2 packs :'-(The ones that I did use were excellent! I had to splice (3) 10G wires and (1) 18G wire together near a small goldfish pond (read, moist soil), and this fit perfectly and screwed on nice and tight. The caulk on the inside sealed them up perfectly, so even after burying them in the wet soil there was no voltage drop.As others said, the caulk is SUPER sticky!! After I screwed each one on, though, I picked up some dirt and rubbed it in to my hands; that worked fine to remove the stickiness, and washed off later with no problem.I kind of think that I could have saved some money by using regular wire nuts and just squirting silicone caulk in it before screwing in the wire, but I'm not positive it would have been the same. These were good for the job, though, I just wish that I would have realized that I had overpurchased earlier so I could at least return one of the packs.

If using for irrigation you'll probably want smaller ones.

Last summer I used these to wire a few landscape lights that my garner accidentally cut the wire. They have held up perfectly. I just had to rewire about 5 lights moving them around my yard and used these again. They are so easy to use and you can tell that they would be waterproof. I still wrapped the wires in electric tape to be sure. They work so well, I just HAD to come and write a positive review!

I used these for my landscape lighting splices. Once in a while I get a bad connection and have to untwist it. The silicone is a little messy if you have to redo connections. Otherwise, seems to work great. Time will tell if I have any connection problems, but there are other factors involved when it comes to make a long-lasting splice connection.